whohostit.
EMAIL ADDRESS LOOKUP

Look up an
email address.

Check whether an email address is well formed, who provides its email,
and whether its domain can receive mail.

Only the part after the @ is looked up. The name before it stays in your browser. Live DNS lookup

Your browser sends the domain you search directly to Google Public DNS, RIPEstat, and the domain’s registry to fetch public records. We don’t store your searches on our servers.

CURIOUS? TRY

One domain. The bigger picture.

Hosting, registrar, expiry, DNS records, email, and security details appear here.

PUBLIC DATA. ONE SIMPLE LOOKUP.
THE SHORT VERSION

What an email address lookup can tell you

Everything after the @ is a domain, and public DNS says a lot about it: whether it exists, which mail servers accept its email (its MX records), which provider runs them, and whether it publishes SPF and DMARC to protect against spoofing.

WhoHostIt also checks the address format against the email standards, flags role-based addresses such as info@ or support@, and recognises common free webmail and disposable email services.

Common questions

Can you tell me who owns an email address?

No. WhoHostIt only reads public technical records about the email domain. It doesn’t search for or reveal the person behind an address.

Does this verify that the mailbox exists?

No. The only way to test a specific mailbox is to start delivering mail to it, and many servers accept every address or deliberately hide the answer. A valid format and a domain that accepts email are good signs, but the only real confirmation is a reply.

What is a disposable email address?

A temporary inbox from a service such as Mailinator or YOPmail, often used to sign up for something without giving a real address. Our list covers common services, but new ones appear all the time.

What is a role-based email address?

An address for a function rather than a person, such as info@, sales@, or support@. It usually reaches a shared inbox read by several people.

SMALL TOOL. CLEAR ANSWERS.

Under the hood, in three steps.

01

You bring the domain

Paste a domain or a full URL. We’ll find the hostname and its registered parent domain.

02

We connect the dots

Public DNS, routing data, and registry records reveal the domain’s infrastructure.

03

You get the bigger picture

Explore the details on this page or download a report. Private and unavailable data are labelled.

MORE FREE TOOLS

Every lookup runs the full report.

Website hosting checkerFind out who hosts any website, plus its registrar, DNS and email provider. Email host & MX lookupFind out who hosts an email address or domain, from its MX records. Domain expiry & age checkerCheck when a domain expires, when it was registered, and how old it is. DMARC, SPF & DNSSEC checkerCheck a domain’s DMARC record, SPF record, and DNSSEC status. Nameserver lookupFind out who hosts DNS for a domain and see its nameservers.